As a stand alone tab application its good if you have a small business and just need professional looking invoices. However the desk top is a bit clunky, and the sync is done through the cloud which you have to pay for there is no way of syncing without paying this.
I have found the sync to be flaky at best and the tech support rubbish. All I ever get back is links to FAQ and merged ticket I keep writing for help in the vain hope that there is actually some body there but so far nothing a month into it still no joy.
So use it as stand alone on your table / mobile but don't waste your money on the desk top and sync its rubbish.